Home / 1,929.36-2,663.50-1,338.87

Finding the Fourth Proportional to 1,929.36, 2,663.50 and 1,338.87

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Solution

The fourth proportional to 1,929.36, 2,663.50 and 1,338.87 is: 1,848.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.36 : 2,663.50 = 1,338.87 : x
  2. Step 2: Convert to fraction form
    1,929.36/2,663.50 = 1,338.87/x
  3. Step 3: Cross multiply
    1,929.36x = 2,663.50 × 1,338.87
  4. Step 4: Simplify right side
    1,929.36x = 3,566,080.25
  5. Step 5: Solve for x
    x = 3,566,080.25/1,929.36
  6. Step 6: Final answer
    x = 1,848.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.